Approved OEM Siemens
At Electrical Panelboard Supply San Bernardino, we design and manufacture high-performance electrical panelboards engineered to power demanding commercial and industrial applications. Proudly made in California, our panelboards feature fast lead times, clean layouts, and comprehensive documentation—helping contractors install with confidence and keep every project on schedule.
We are dedicated to delivering custom panelboards with unmatched quality, the fastest lead times guaranteed, and deep expertise you can rely on.
We are a Siemens OEM Approved Partner, delivering UL Certified switchgear built for safety, reliability, and compliance.
Every California panelboard we produce undergoes rigorous testing to meet UL 891 certification standards. This ensures safe operation under rated current, verified performance, and complete documentation for inspections and project closeouts. With our precision engineering and commitment to quality, your installation passes approvals faster and stays compliant from start to finish.
From lighting and power distribution to mixed-load applications, our customizable panelboards are designed to meet your project’s unique requirements. Choose from main-lug-only or main-breaker configurations, copper bus options, feed-through lugs, integrated metering, and surge protection. Each setup is optimized for commercial buildings, healthcare facilities, and data centers across California.
Factory-assembled options up to 600 Vac and 1200 A to fit service or feeder applications.
Ready for utility or tenant metering and energy insight add-ons where specified.
NEMA 1/3R/12 enclosures available for diverse environments.
Our low-voltage electrical panelboards deliver code-compliant, reliable power distribution with exceptional speed and precision. Every unit is customized to your project’s load, space, and schedule—ensuring dependable performance, energy efficiency, and safety in every environment.
High-performance electrical panelboards built for uptime & scalability
Efficient systems keeping production lines powered without downtime
Scalable power systems driving logistics, operations, and customer service
Custom electrical panelboards enhancing safety, efficiency, and tenant comfort
We manufacture low voltage electrical panelboards built for your project’s demands, delivering reliable code compliant solutions with unmatched speed and performance.
Every California panelboard is verified through rigorous testing to meet UL 891 standards. Our process confirms safe operation under rated current and provides complete documentation for inspections and project closeout.
Verifies insulation strength and ensures safe operation across rated voltages.
Confirms that conductors and bus maintain performance under continuous load.
Validates structural integrity, enclosure fit, and reliable breaker operation.
Complete factory test data and certification packages.
Every California panelboard is verified through rigorous testing to meet UL 891 standards. Our process confirms safe operation under rated current and provides complete documentation for inspections and project closeout.
When reliability, performance, and timing matter most, trust Electrical Panelboard Supply San Bernardino to deliver custom-built electrical panelboards that meet your exact needs. We’ll design the right interior, breakers, and enclosure for your project—and deliver it quickly to keep your schedule on track.
Request a quote today to see why contractors throughout California depend on us for high-quality, custom electrical panelboards delivered fast and ready to install.
Local manufacturing shortens logistics, simplifies changes, and helps hit tight milestones. Standardized builds and disciplined material control reduce rework while keeping quality high—so your California panelboards arrive ready to land and terminate.
We ship across the U.S., Canada, and Mexico. Whether you’re in a metro area or remote location, our network ensures your heavy or high-value equipment moves quickly—without delays, customs issues, or added stress.
Whether you’re looking for backup power systems, industrial energy storage, or sustainable energy consulting, we’re ready to support your project needs. Be as specific as possible so we can connect you with the right expert.
+1 (866) 773-8050
1745 S. Bon View Ave Ontario CA 91761
sales@deipower.com
Terms | Privacy | +1 (866) 773-8050 | sales@deipower.com
© 2025 DEI Power Solutions, LLC. All Rights Reserved.
What Is a Custom Panelboard—and Do You Need One?
5 Signs Your Facility Needs a Panelboard Upgrade
Office Location
1745 S. Bon View Ave
Ontario CA 91761
Contact Info
Phone: +1 (866) 645-1281
Email: sales@deipower.com
What Is a Custom Panelboard—and Do You Need One?
5 Signs Your Facility Needs a Panelboard Upgrade
What Is a Custom Panelboard—and Do You Need One?
5 Signs Your Facility Needs a Panelboard Upgrade
